Certain bacteria produce a chemical that makes them resistant to penicillin. Since these bacteria reproduce asexually, they usually produce offspring that ... ?

An endangered seal species consists of a single population. An earthquake divides its habitat, creating one large population of about 2,000 individuals and another, much smaller population of 50 individuals.

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism.

Which types of rocks are used in radiometric dating? a. Igneous only c. Sedimentary or metamorphic b. Igneous or sedimentary d. Igneous or metamorphic

What of the following is not likely to appear on a map A. Cardinal directions B. Legend C. Longitude lines D. Poles E. Satellites

You purchase a food product that is enriched. this means that

Many children were paralyzed by polio in the 1950s. Today, polio has been reduced by 99 percent. Which statement best explains how this disease has been almost eradicated?

When looking at biodiversity threats, how do invasive species rate, wat is the higest threat to biodiversity

In which process is a zygote formed in a plant from the joining of a sperm and an egg? fertilization pollination seed dispersal vascular transport

Name and describe the five main structures of the hair root

true or false: more people live in development nations than live in developed nations